“More than 90% of directing a picture is the right casting,” suggests Martin Scorsese in the revelatory documentary CASTING BY. Producers might well reach a similar assessment for financing a picture as well since actors remain by far the most enticing lures to potential investors. But settling on just who might be “right” for that picture is another matter entirely – and a source of constant tension as filmmakers struggle to reconcile the urgent needs of the story with the erratic tastes of the global marketplace and its appointed gatekeepers.